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Diffstat (limited to 'source3/smbd/auth_server.c')
-rw-r--r--source3/smbd/auth_server.c354
1 files changed, 0 insertions, 354 deletions
diff --git a/source3/smbd/auth_server.c b/source3/smbd/auth_server.c
deleted file mode 100644
index 067b5b2997..0000000000
--- a/source3/smbd/auth_server.c
+++ /dev/null
@@ -1,354 +0,0 @@
-/*
- Unix SMB/Netbios implementation.
- Version 1.9.
- Authenticate to a remote server
- Copyright (C) Andrew Tridgell 1992-1998
- Copyright (C) Andrew Bartlett 2001
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-
-extern pstring global_myname;
-
-/****************************************************************************
- Support for server level security.
-****************************************************************************/
-
-static struct cli_state *server_cryptkey(void)
-{
- struct cli_state *cli = NULL;
- fstring desthost;
- struct in_addr dest_ip;
- char *p, *pserver;
- BOOL connected_ok = False;
-
- if (!(cli = cli_initialise(cli)))
- return NULL;
-
- /* security = server just can't function with spnego */
- cli->use_spnego = False;
-
- pserver = strdup(lp_passwordserver());
- p = pserver;
-
- while(next_token( &p, desthost, LIST_SEP, sizeof(desthost))) {
- standard_sub_basic(desthost);
- strupper(desthost);
-
- if(!resolve_name( desthost, &dest_ip, 0x20)) {
- DEBUG(1,("server_cryptkey: Can't resolve address for %s\n",desthost));
- continue;
- }
-
- if (ismyip(dest_ip)) {
- DEBUG(1,("Password server loop - disabling password server %s\n",desthost));
- continue;
- }
-
- if (cli_connect(cli, desthost, &dest_ip)) {
- DEBUG(3,("connected to password server %s\n",desthost));
- connected_ok = True;
- break;
- }
- }
-
- SAFE_FREE(pserver);
-
- if (!connected_ok) {
- DEBUG(0,("password server not available\n"));
- cli_shutdown(cli);
- return NULL;
- }
-
- if (!attempt_netbios_session_request(cli, global_myname, desthost, &dest_ip))
- return NULL;
-
- if (strequal(desthost,myhostname())) {
- exit_server("Password server loop!");
- }
-
- DEBUG(3,("got session\n"));
-
- if (!cli_negprot(cli)) {
- DEBUG(1,("%s rejected the negprot\n",desthost));
- cli_shutdown(cli);
- return NULL;
- }
-
- if (cli->protocol < PROTOCOL_LANMAN2 ||
- !(cli->sec_mode & 1)) {
- DEBUG(1,("%s isn't in user level security mode\n",desthost));
- cli_shutdown(cli);
- return NULL;
- }
-
- DEBUG(3,("password server OK\n"));
-
- return cli;
-}
-
-/****************************************************************************
- Clean up our allocated cli.
-****************************************************************************/
-
-static void free_server_private_data(void **private_data_pointer)
-{
- struct cli_state **cli = (struct cli_state **)private_data_pointer;
- if (*cli && (*cli)->initialised) {
- cli_shutdown(*cli);
-
- SAFE_FREE(*cli);
- }
-}
-
-/****************************************************************************
- Send a 'keepalive' packet down the cli pipe.
-****************************************************************************/
-
-static void send_server_keepalive(void **private_data_pointer)
-{
- struct cli_state **cli = (struct cli_state **)private_data_pointer;
-
- /* also send a keepalive to the password server if its still
- connected */
- if (cli && *cli && (*cli)->initialised) {
- if (!send_keepalive((*cli)->fd)) {
- DEBUG( 2, ( "password server keepalive failed.\n"));
- cli_shutdown(*cli);
- SAFE_FREE(*cli);
- }
- }
-}
-
-/****************************************************************************
- Get the challange out of a password server.
-****************************************************************************/
-
-static DATA_BLOB auth_get_challange_server(void **my_private_data, const struct authsupplied_info *auth_info)
-{
- struct cli_state *cli = server_cryptkey();
-
- if (cli) {
- DEBUG(3,("using password server validation\n"));
- if ((cli->sec_mode & 2) == 0) {
- /* We can't work with unencrypted password servers
- unless 'encrypt passwords = no' */
- DEBUG(5,("make_auth_info_server: Server is unencrypted, no challange available..\n"));
-
- *my_private_data = (void *)cli;
- return data_blob(NULL, 0);
-
- } else if (cli->secblob.length < 8) {
- /* We can't do much if we don't get a full challange */
- DEBUG(2,("make_auth_info_server: Didn't receive a full challange from server\n"));
- cli_shutdown(cli);
- return data_blob(NULL, 0);
- }
-
- *my_private_data = (void *)cli;
-
- return data_blob(cli->secblob.data,8);
- } else {
- return data_blob(NULL, 0);
- }
-}
-
-
-/****************************************************************************
- Check for a valid username and password in security=server mode.
- - Validate a password with the password server.
-****************************************************************************/
-
-static NTSTATUS check_smbserver_security(void *my_private_data,
- const auth_usersupplied_info *user_info,
- const auth_authsupplied_info *auth_info,
- auth_serversupplied_info **server_info)
-{
- struct cli_state *cli;
- static unsigned char badpass[24];
- static fstring baduser;
- static BOOL tested_password_server = False;
- static BOOL bad_password_server = False;
- NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE;
- BOOL locally_made_cli = False;
-
- cli = my_private_data;
-
- if (cli) {
- } else {
- cli = server_cryptkey();
- locally_made_cli = True;
- }
-
- if (!cli || !cli->initialised) {
- DEBUG(1,("password server %s is not connected\n", cli->desthost));
- return NT_STATUS_LOGON_FAILURE;
- }
-
- if ((cli->sec_mode & 2) == 0) {
- if (user_info->encrypted) {
- DEBUG(1,("password server %s is plaintext, but we are encrypted. This just can't work :-(\n", cli->desthost));
- return NT_STATUS_LOGON_FAILURE;
- }
- } else {
- if (memcmp(cli->secblob.data, auth_info->challange.data, 8) != 0) {
- DEBUG(1,("the challange that the password server (%s) supplied us is not the one we gave our client. This just can't work :-(\n", cli->desthost));
- return NT_STATUS_LOGON_FAILURE;
- }
- }
-
- if(badpass[0] == 0)
- memset(badpass, 0x1f, sizeof(badpass));
-
- if((user_info->nt_resp.length == sizeof(badpass)) &&
- !memcmp(badpass, user_info->nt_resp.data, sizeof(badpass))) {
- /*
- * Very unlikely, our random bad password is the same as the users
- * password.
- */
- memset(badpass, badpass[0]+1, sizeof(badpass));
- }
-
- if(baduser[0] == 0) {
- fstrcpy(baduser, INVALID_USER_PREFIX);
- fstrcat(baduser, global_myname);
- }
-
- /*
- * Attempt a session setup with a totally incorrect password.
- * If this succeeds with the guest bit *NOT* set then the password
- * server is broken and is not correctly setting the guest bit. We
- * need to detect this as some versions of NT4.x are broken. JRA.
- */
-
- /* I sure as hell hope that there arn't servers out there that take
- * NTLMv2 and have this bug, as we don't test for that...
- * - abartlet@samba.org
- */
-
- if ((!tested_password_server) && (lp_paranoid_server_security())) {
- if (cli_session_setup(cli, baduser, (char *)badpass, sizeof(badpass),
- (char *)badpass, sizeof(badpass), user_info->domain.str)) {
-
- /*
- * We connected to the password server so we
- * can say we've tested it.
- */
- tested_password_server = True;
-
- if ((SVAL(cli->inbuf,smb_vwv2) & 1) == 0) {
- DEBUG(0,("server_validate: password server %s allows users as non-guest \
-with a bad password.\n", cli->desthost));
- DEBUG(0,("server_validate: This is broken (and insecure) behaviour. Please do not \
-use this machine as the password server.\n"));
- cli_ulogoff(cli);
-
- /*
- * Password server has the bug.
- */
- bad_password_server = True;
- return NT_STATUS_LOGON_FAILURE;
- }
- cli_ulogoff(cli);
- }
- } else {
-
- /*
- * We have already tested the password server.
- * Fail immediately if it has the bug.
- */
-
- if(bad_password_server) {
- DEBUG(0,("server_validate: [1] password server %s allows users as non-guest \
-with a bad password.\n", cli->desthost));
- DEBUG(0,("server_validate: [1] This is broken (and insecure) behaviour. Please do not \
-use this machine as the password server.\n"));
- return NT_STATUS_LOGON_FAILURE;
- }
- }
-
- /*
- * Now we know the password server will correctly set the guest bit, or is
- * not guest enabled, we can try with the real password.
- */
-
- if (!user_info->encrypted) {
- /* Plaintext available */
- if (!cli_session_setup(cli, user_info->smb_name.str,
- (char *)user_info->plaintext_password.data,
- user_info->plaintext_password.length,
- NULL, 0,
- user_info->domain.str)) {
- DEBUG(1,("password server %s rejected the password\n", cli->desthost));
- /* Make this cli_nt_error() when the conversion is in */
- nt_status = cli_nt_error(cli);
- } else {
- nt_status = NT_STATUS_OK;
- }
- } else {
- if (!cli_session_setup(cli, user_info->smb_name.str,
- (char *)user_info->lm_resp.data,
- user_info->lm_resp.length,
- (char *)user_info->nt_resp.data,
- user_info->nt_resp.length,
- user_info->domain.str)) {
- DEBUG(1,("password server %s rejected the password\n", cli->desthost));
- /* Make this cli_nt_error() when the conversion is in */
- nt_status = cli_nt_error(cli);
- } else {
- nt_status = NT_STATUS_OK;
- }
- }
-
- /* if logged in as guest then reject */
- if ((SVAL(cli->inbuf,smb_vwv2) & 1) != 0) {
- DEBUG(1,("password server %s gave us guest only\n", cli->desthost));
- nt_status = NT_STATUS_LOGON_FAILURE;
- }
-
- cli_ulogoff(cli);
-
- if NT_STATUS_IS_OK(nt_status) {
- struct passwd *pass = Get_Pwnam(user_info->internal_username.str);
- if (pass) {
- if (!make_server_info_pw(server_info, pass)) {
- nt_status = NT_STATUS_NO_MEMORY;
- }
- } else {
- nt_status = NT_STATUS_NO_SUCH_USER;
- }
- }
-
- if (locally_made_cli) {
- cli_shutdown(cli);
- SAFE_FREE(cli);
- }
-
- return(nt_status);
-}
-
-BOOL auth_init_smbserver(auth_methods **auth_method)
-{
- if (!make_auth_methods(auth_method)) {
- return False;
- }
- (*auth_method)->auth = check_smbserver_security;
- (*auth_method)->get_chal = auth_get_challange_server;
- (*auth_method)->send_keepalive = send_server_keepalive;
- (*auth_method)->free_private_data = free_server_private_data;
- return True;
-}
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